Talvez deva tentar algumas variações de ortografia:
letter nerve » letter nurse (Expandir a Pesquisa), matter nerve (Expandir a Pesquisa), letter nervous (Expandir a Pesquisa)
delta curves » melt curves (Expandir a Pesquisa), delta survey (Expandir a Pesquisa), dta curves (Expandir a Pesquisa)
curves based » curve based (Expandir a Pesquisa), leaves based (Expandir a Pesquisa)
menon serve » menoni herve (Expandir a Pesquisa), menon sree (Expandir a Pesquisa), region serve (Expandir a Pesquisa)
serve case » nerve case (Expandir a Pesquisa), service case (Expandir a Pesquisa), nerve cases (Expandir a Pesquisa)
based doe » based dose (Expandir a Pesquisa), based de (Expandir a Pesquisa), based doa (Expandir a Pesquisa)
case goes » care goes (Expandir a Pesquisa), age goes (Expandir a Pesquisa), jose goes (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
j delta » j della (Expandir a Pesquisa), j delton (Expandir a Pesquisa)
a dis » a dos (Expandir a Pesquisa), a des (Expandir a Pesquisa), a dia (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( _ letter nerve a dis ) or ((( j delta curves based doe ) or ( j menon serve case goes ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ letter nerve a dis ) OR ((( j delta curves based doe ) OR ( j menon serve case goes )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ letter nerve a dis ) or ((( j delta curves based doe ) or ( j menon serve case goes ))))*.